Type-writing machine.



vJ. T. SGHAAFI'. TYPE WRITING MACHINE. APPLIUATIGH FILED un ze, 1909.

Patented Aug. 9, 1910.

2 SHEETS-SHBET 41.

' INVENTUR /SZYKN JJM www@ HIEATTUFQNEY J. T. SGHAAPP. TYPE WRITINGMACHINE.

APPLIUATION FILED HAY 29, 1909.

Patenna Aug'. 9,1910'.

a :innig-Tamm* f. .INVENTCIR 7l/L J, Lw

WITN

H15 ATTURNEY 1 JOHN `T; SCHAFF, 0F WSHING-TON, DlSTRICATO COLMBIA,ASSIGOR T0 'UNION TYPEWRITER COMPANY,v OF JERSEY CITY, NEW 'IERSHLY,4 A.CORPORATION OF NEW JERSEY. 4

esagera.

To (11211071.0711. 'it may concern: f

Be it known that l, JOHN T. SCHAAFF, citizen of the United States, andresident of Vlashington, in the District of Columbia,

have invented certain new and useful Improve-ments' in Type-WritingMachines,A of ,which the following' is a specification.

My invention 4relates to typewriting may ehines and more particularly totype actions. TheI main object of my rinvention is tov providecomparatively simple and etiicient' type actions which afford a caseshifting .movement of the type basket.

To the above and other ends 'which will hereinafter appear, my inventionconsists in the features ot construction, arrangements .ofparts andcombinationsof devices to be hereinafter' described .and particularlypointed out in the appended claims.`

In the accompanying drawings. wherein like reference characters indicatecorre spending parts in the various views, Figure l is a verticalcentral front to rear sectional 'view of'one form of typewriting machineembodying my invention, a sutficient number of parts of the machinebeing shown to illustrate my invention in its embodiment therein. Fig. 2is avertical transverse sectional view of the same taken on the line.a-a: of Fig. 1 and looking inthe direction 'of the arrow at said line.s

The frame ot the machine comprises a base a, corner posts b and a topplate c.

Key levers 1 of the second order are fulcrumed in the base a of themachine on a pivot rod 2 and are provided with nger keys 3 in differentbanks as indicated in Fig. 1 so that the key levers are of differentlengths. Each key lever has an upwardly extending ear 4 with a'laterally projecting pin 5 thereon which is received in a substantiallyhorizontal slot 6 formed in an angular sub-lever 7 having asubstantially horizontally disposed arm 8 and -a substantiallyvertically disposed arm9.. The sublevers 7 are all fulcrumed 'on a pivotrod 10 .secured at its ends to the base a of the machine. The upper endsof -the arms' 9- of the angular sub-.levers are extended rearwardly at11 where they are provided with laterally projecting `pins 12 receivedin vertically disupright sulnlevers 14. arel levers of the Specificationof Letters Patent.

`wardly against the front .diagrannmatically shown TYPE-WRITING MAGHINE.

lower ends on a rearwardly at 20 where it is provided with a.V

laterally extending pin 21 received in an in-V clined slot 22 in theheel of the associated type bar `23. ,The type bars are'segmenta'llyarranged and work in .slots 24. in the type bar segment and strike ulwardlyand rearaee of .a platen 25, in Fig'. 1, it being understood thatthe plat-envie carried by a suitable carriage (not shown) which travelsfrom side to :side ydii the machine above the top plate 0. The nrwardends of the type bars are supported M.on a pad 27 which in turn issupported by a segmental stripp28 secured :to the forward ends offorwardly projectingr arms 29`secured at their rear ends by screws 30 tothe type bar segment. The type bar segment is pivoted .at 31 on twoset-s of parallel links 32 connected to rock shafts 33 mounted to turnin open-ings in bracketssecured to and depending from the top plate c ofthe machine. One of these brackets and a pairl of associated parallellinks 32 are situated near Jeach side of the machine and connect withthe type bar segment a-t 'one side thereof. Each bracket 34 s providedwith forwardly projecting lugs 35 vtapped to receive oppo'sl-telydisposed screw stops 3G with which the uppermost of the pair 'ofassociated parallel links coperateto limit the case shifting movementsof the lirks i and the segment to which. they are connected. Thelower-most of thele't-hand set of parallel links 32 is extended andrearwardly beyond its shaft 33 to form an arm 37 to which a dependinglink 38 is connected, the lower eI-ldo'f the link 38 being.

connectedto aV shift key lever 39 having a shiftkey 39a. lt should ,beunderstood that the means for effecting the case shift movepivot rod 15`and work in slots 16 1n a supporting piece 17 connected outwardlyrareaeea aeg. a, iam. Application filed May 29, 1909. Serial No.499,328. i I y ayv ment of the type bar segment may be varied at will, aconventionalform only of the case shifting means being showin p From acomparison of Figs. l and 2-ift will be\ observed that the uprightsub-levers 14: vary\in length and project at increasing 'v heights fromposed slots 13 of uptight sub-levers 14. `The the center to the sideseff the System in order to make connection with the segmentally arran edtype bars. Moreover, it will he observe that those sub-levers 14v vwhichare situated near the sides of the system are off-set or bent laterallyand inwardly at the up er ends thereof as indicated at 14u in order tocompensate for the difference in width between the keyboard andthelsystem of type bars. It will also be seenA that the upright arms 9of the s stem Vof angularsub-levers all extend to t e same height andmake connection with the sublevers 14 at a uniform distance from thefulcrum of the latter, and that the effective lever arms 9 are parallelwith the sub-levers 14 up to the points where connection is made betweenthe sub-levers 7 and 14. Furthermore, it' will be seen that thehorizontally disposed arms 8 of the angular levers project varyindistances from the fulcruinlO of the vsubevers 7 and from the fulcruin 2ofr the key levers so that the points 5-6 of connection between theangular levers and the key levers are at varying distances from thefulcrum of the key levers and at varying distances from the fulcrum ofthe angular levers. This manner of connecting the )arts is such thatcompensation is provide 4for the variation in leverageA due to thevariation in lengt-h of the sub-levers 14 and for the variation inlength of the key, levers 1.

It will be seen that the pin and slot connections 12|-13 between thesub-levers 7 and 14 afford ya case shifting 'movement of the segment tochange the case position of the types, the sub--levers 14 at this timebeing moved with the type bar segment, whereas the sub-levers 7 andkeypleversare carried by the' frame of the machine and'remain fixed.'Moreover, .it will be understood that the construction; affords anacceleration of each type bar in its movement toward the printingposition, the initial portion of the stroke being under a low leveragewhich affords an easy and soft touch uponv the keys. In the constructionas shown the acceleration in the movement vof the bar does not occurthroughout the entire stroke but does occur throughout a. considerableportion thereof and the touch is comparatively light at the beginning ofthe stroke.

From the foregoing description it will be understood that I provide asimple and eficient type action in which the relative caseshiftingmovement may be effected between the actuating lparts'of thetype action and wherein there is a compensation effected to provide asubstantially uniform leverage of the different type actions throughoutthe system and toprovide a uniform dip of the ke s throughout thesystem.

ilarious changes may be made without departing from vention.`

What I claim as new and desire to secure by Letters Patent, is zthespirit and scope of my inl. In a front-strike tylpiewritiiig machine,

the Combination f a Shiaabie type im Segment, a type bar carriedthereby, aA key lever,

a sub-lever shiftable with said segment and operatively connected withthe t e bar, a second sub-lever controlled bysaidyiiey lever, and meansfor operatively connecting said sub-levers to afford a relative shiftingmovement between them when the type bar segment is shifted.

2. In a front-strike typewriting machine,

the combination of a shiftable type bar seg-l ment, a type bar carriedthereby, a key lever, an upright sub-lever shiftable with said Segmentand operatively connected with the type bar, a second sub-lever whichisin the form of an angular -lever and is controlled by said key lever,and means for operatively connecting said sub-levers to afford arelative shifting movement between'them when the type bar segment isshifted.

3. In a front-strike ty ewriting machine, the combination of a shiftabletype bar segme1it,atype bar carried thereby, a key lever, a sub-levershiftable with said segment and operatively connected with said ty ebar, and a. second sub-lever controlled y said key lever and connectedby a pin and slot connection with said first mentioned sublever toafford a relative shifting movement between the sub-levers when the typebar segment is shifted.

4. In a front-strike -tyewriting machine, the combination of a shi tabletype bar segment, a type bar carried thereby, a key lever, an uprightsub-lever sliiftable with said se ment and operatively connected withsaid type bar, and an angular sub-lever connected by a pin and slotconnection with said key lever and connected by a pin and slotconn'tlctioii with said upright sub-lever to afford a relative shiftingmovement between the sub-levers when the type bar segment is shifted.

In a front-strike typewriting machine, the combination of a shiftable tye bar segment. an upwardly and rearwar ly striking type bar carriedthereby, a key lever of the second order, aii upright sub-lever of thethird order pivoted on and shiftable with said segment and operativelyconnected with said type bar and an angular sub-lever pivoted on a fixedportion-of the machine and connected b v a nin and slot connection withsaid key lever and connected b v a pin and slot `connection with saiduprightsub-lever to afford a relative shifting movement between tliesub-levers when the type bar segment is shifted.

G. Iii a front-strike typewriting machine, the combination of a seriesof upwardly and rearwardly striking typebars; a series of key levers;and intermediate operative connections between -said key levers and typebars, said connections comprising a series of sub-levers that vary inlength, and a` second.'

system.

All]

7. lin a iirvontstrike typewriting machine, the combination of a seriesof upwardly and rearwardly striking type bars; a shift-able type barsegmenten which said type bars are mounted; fa series of key levers; anda series of intermediate operative connections between said key leversand type bars, said connections comprising a series of sub-levers thatvary in length, said sub-levers bein' carried by thetype bar segment, asecon series of sub-levers, oneset of the -arms of which are of -auniform length and the other set of the arms of which vary in length toprovide 'a uniform leverage throughout the system, the operativeconnection between said sub-levers adording a relative shiftingmovementbetween them when the type bar segment is shifted. i

8. ln a front-strike,typewritingvmachine, the combination of a series of`key l-evers; a series of upwardly and rearwardlystrking type bars; andaseries. of intermedi-ate op erative connections between said key leversand type-bars, said connections comprising a series of sub-leversprojecting varying dis, `tantes from their fulcrums, and a second seriesof sub-levers operatively connected with said tirst mentioned sub-leversat a uniform distance from the fulcrums of vthe lirst mentioned seriesof sub-levers and opi erativel'y connected to said key levers at varyingdistances fromthe ful-crums ofthe key levers.

9. lny al rontstrike typewriting machine, the combination of a series ofkey levers; -a series of upwardly and rearwardly striking type bars; ashiftable type bar segment on which the type bars are mounted; andintermediate operative connections between the key levers and typebars,'said connections comprising a series of sub-levers projectingvarying distances from their fulcrums `and carried by said shiftabletype bar segment, a second series of sub-levers operatively connectedWith'said first mentioned sub-levers ata uniform distance from thefulcrums .of said first mentioned sub-levers, and operatively connectedto said key levers at varying distances from the fulcrums of said keylevers, the o erative connection between the. two series o "sub-leversallerdings. relative shifting movement `between said two series ofsub-levers when the type bar segment is shifted.

y l0. ln a front-strike typewriting machine, the combination of ashiftable type bar segment,='an` upwardly and rearwardly strikingiypel'iiinfcarried thereby., 'a kev lever ot' the second order, anupright -subslever of third order pivoted' 'onV and shiftable Wit saidsegment and' operatively connected with the type bar, an anularsuo'l'ever-pivoted Y'on a fixed portion or the machine and con-`trolledby said 'key lever, and means for operatively connecting saidsub-levers to alord f va relative shifting movement between them whenille type bar segment is shifted.

l1. In a front-strike typewriting machine, the 'combination of a seriesof lupwardly and rearwardly striking type bars; a series 'of` key leversthat vary in length; Vand intermediate operative connections betweensaid the combination of a series of upwardly and rearwardly strikingtype bars; a series of key levers that vary in length; and intermediateoperative connections between said key levers and type bars, saidconnections comprising a series of sub-levers that vary in length, and asecond series offangular lsubdevers having substantially horizontallydisposed arms operatively connectedfs.Y to the key levers, andsubstantially vertically disposed armsoperatively connected to the firstmentioned series of sub-levers, tl'fsnbstantially vertically disposedarms of the angular levers being of' uniform length and thesubstantially horizontally disposed arms varying in len th'according tothe variation in length of t 1e rst mentioned series of sub-levers andaccording to the variation in length of the key levers.

13, In a front-strike typewriting machine, the combination of a seriesof upwardly and rearwardly striking type bars, a shiftable type barsegmentenwhich said type bars are mounted., a series of sublevers thatvary in length and which are operatively connected with the type barsand shiftable with the type bar segment, aseries of key levers that varyin length, a second series of sub-leversl operatively connected to thekey 'levers and.

to the lirst mentioned series of sub-levers, one set of the arms of thesecond series of sub levers lbeing of uniform length and the other setof arms varying in length accordingito the variation in length ot thefirst mentioned series of sub-levers and accordingto the vari ation inlength of the'key levers, and means for affording a relative shiftingmovement between said series of sub-levers when the type bar segment isshifted.

carried by said Segment and connectedY 14;.A In a front-strikety'pewriting machine,"

the combination o f a Series of upwardly and rearwardly swinging typebars, a shiftable segment on which said type bars are-mounted, a seriesof sub-,levers carried'by said'segment and connected directly tothe-type barsl by pin and slotconnections, a second series of sub-leversconnected to said first mentioned.

sub-levers by pin land slot connections which afford relative shiftingmovements between the two series of sublevers when the segment isshifted, and key levers to whichsaid .second series of sub-levers areconnected.

l5. In'a front-strike typewriting machine, the combination of a seriesof upwardly and rearwardly swinging type bars, a shiftable segment onwhich said type bars are mounted, a series of sub-levers of the thirdorder `carried by said segment and connected directly tofthe type b'arsby pin and slot con-- nections, a second series ofangular sub-le- Y.versconnected to said first mentioned sublevers by pin and slot connectionswhich afford relative movements between the two series of sub-leverswhen the segment is shifted, and key levers to which the second seriesof sub-levers is .connected by pin and slot connections.

lt). In' a front-strike typewriting machine, the combination of upwardlyand rearwardly swinging type bars, a shift-able segment on which saidtype bars are mounted, a series of sub-levers of the third orderdirectly to the type bars by pin and slot connections, 'lsaid sub-leversetending different distances from their lfulc'rums, a second series'ofangular sub-levers having upright arms operatively connected tosaidfirst mentioned sub-levers to afford relative movements between the twoseries of sub-l levers whenthe segment is shifted, the upright arms of.the angular sub-levers extending a uniform distance from the fulcrums ofsaid angular' sub-levers, and key levers to which the othersubstantially horizontally disposed arms of'said angular sublevers areconnected at varying distances from the fulcrumsvof said angularsublevers.

17. In a front-strike ty'pewriting maslot connections, to afford'relative move- .ments lbetween the two series of sub-levers when thesegment is shifted, said upright arms of the angular sub-leversextending a uniform distance from the -fulcrums of'said angular'sub-levers, and key levers to which the other substantially horizontallydisposed a series of upright sub-levers and a series of separatelyfulcrumed angular sub-levers intermediate the key levers and the uprightsub-levers, the angular levers being operatively connected with theupright sub-levers and having one se't of their arms substantiallyparallel with the key levers and having the other set of their armssubstantially parallel with the upright sub-levers up to the points ofoperative connection between 'the angular and upright sub-levers.

lf). In a front-strike typewriting machine, the combination of a seriesof up- \'ardly and rearwardly striking type bars; a type bar segmentshiftable to change the case position of the types; a series of keylevers; and operative connections between said key levers and type bars,said connections comprising a rseries of upright sublevers s hiftablewith said segnil at, a series of angular sub-levers intermediate the keylevers and said upright sub-levers, `the angular sub-levers having oneset of their arms substantially parallel with the key levers and havingthe other set of their arms substantially parallel with the uprightsublevers up to the points of operative connec-4 tion between theangular and upright sublevcrs, and means for operatively connecting thetwo series of sub-levers to afford a relative .shifting movement betweenthem when the type bar segment receives a case shifting movement.

20. ln a front-strike typewriting machine` the combination of a seriesof upwardly and rearwardly striking type bars, a type barsegmentshiftable to change the ease position of the types, a series ofupright sub-levers sliiftableI with said segment, pin and slotconnections between said type bars and sub-levers, a series of keylevers, a series of angularsub-levers ii'ltermediate the key levers andsaid upright sub-levers, the angular' levers having one set of theirarms substantially parallel with and connected to the key levers by pinand slot connections and having the other set of their armslsubstantially parallel with the @www upright sub-1eve1s, and pin andslotoonne 'tions between the two series of sub-levers to aolrd arelative ease shifting movement between .them When the type bar segmentis shifted. A

Signed at the' borough of Manhattan, ety

` of New York, in the county of New York and Stem of New Yo1k this 28thclay of l0 `May D. 1909.'

JUHN T. SCHAAFF.

VVt-nesses GHARLEe E. SMITH,

l B." DEEVEB.

